Maintenance Of Hydraulic System; Hydraulic Components - XCMG XE17U Instruction Manual

6.7

Maintenance of Hydraulic System

Caution!
o

Hydraulic Components

Notice!
Notice!
Caution!
09.2020
During the operation, the parts of hydraulic system will become very hot,
and cool the machine before check or maintenance.
– During the maintenance of hydraulic device, ensure that the machine shall
be placed on the flat or hard ground.
o b) Lower the bucket to the ground and shut the engine off correctly.
o c) Maintain the hydraulic device after cooling the machine part,
hydraulic oil and lubricating oil fully, because the residual heat and
pressure will exist in the hydraulic device soon after finishing the
operation.
Hydraulic components
– the air in the hydraulic oil tank to release its inner pressure
Discharge
– Cool the machine. Check and maintain the high-temperature or high-
pressure parts, because they may cause the sudden flyout or spray
of parts or hydraulic oil and the personal injury.
– In case of removing the plug, don't make your body and face against
them, because any hydraulic part may still have a certain pressure
even if the part has been cooled.
– Don't try to maintain or check the traction or rotary motor circuit on
the slope, because they can have high pressures due to their own
weights.
– During the connection to the hydraulic hose and pipe, pay special
attention to the seal surfaces to ensure no dirt exists on them, and
avoid the damages to them.
Remember the following points:
– Clean the inner face of hose, pipe or oil tank with cleaning fluid, and
dry them thoroughly before connecting them.
– Use non-destructive or defective O-rings, and don't damage them
during the assembling.
– During the connection of hose, don't make the high-pressure hose
distorted, because the lifetime of twisted hose will be greatly
reduced. Tighten the low-pressure hose clamp cautiously and
ensure they can't be screwed too tight.
– In case of filling the hydraulic oil, use the oil of the same brand
always, and don't mix the oils of different brands.
– In case of wishing to use the oil listed in "Brands and Names of
Recommended Hydraulic Oils", ensure that all the hydraulic oil in
the system is fully replaced.
Don't run the engine without oil in hydraulic oil tank.
–
Do not run the engine without oil in hydraulic oil tank!
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